Executive Summary

Informations
Name CVE-2020-26950 First vendor Publication 2020-12-09
Vendor Cve Last vendor Modification 2022-04-08

Security-Database Scoring CVSS v3

Cvss vector : CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
Overall CVSS Score 8.8
Base Score 8.8 Environmental Score 8.8
impact SubScore 5.9 Temporal Score 8.8
Exploitabality Sub Score 2.8
 
Attack Vector Network Attack Complexity Low
Privileges Required None User Interaction Required
Scope Unchanged Confidentiality Impact High
Integrity Impact High Availability Impact High
Calculate full CVSS 3.0 Vectors scores

Security-Database Scoring CVSS v2

Cvss vector : (AV:N/AC:M/Au:N/C:C/I:C/A:C)
Cvss Base Score 9.3 Attack Range Network
Cvss Impact Score 10 Attack Complexity Medium
Cvss Expoit Score 8.6 Authentication None Required
Calculate full CVSS 2.0 Vectors scores

Detail

In certain circumstances, the MCallGetProperty opcode can be emitted with unmet assumptions resulting in an exploitable use-after-free condition. This vulnerability affects Firefox < 82.0.3, Firefox ESR < 78.4.1, and Thunderbird < 78.4.2.

Original Source

Url : http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2020-26950

CWE : Common Weakness Enumeration

% Id Name
100 % CWE-416 Use After Free

CPE : Common Platform Enumeration

TypeDescriptionCount
Application 544
Application 133
Application 417

Metasploit Database

id Description
2020-11-18 Firefox MCallGetProperty Write Side Effects Use After Free Exploit

Sources (Detail)

Source Url
CONFIRM https://www.mozilla.org/security/advisories/mfsa2020-49/
MISC http://packetstormsecurity.com/files/166175/Firefox-MCallGetProperty-Write-Si...
https://bugzilla.mozilla.org/show_bug.cgi?id=1675905

Alert History

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Date Informations
2024-02-10 02:08:37
  • Multiple Updates
2024-02-02 02:15:28
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2024-02-01 12:20:38
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2023-09-05 13:09:56
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2023-09-05 01:20:14
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2023-09-02 13:08:44
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2023-09-02 01:20:32
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2023-08-12 13:13:28
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2023-08-12 01:19:47
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2023-08-11 13:06:32
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2023-08-11 01:20:26
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2023-08-06 13:04:47
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2023-08-06 01:19:37
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2023-08-04 13:05:08
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2023-08-04 01:19:54
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2023-07-14 13:05:08
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2023-07-14 01:19:45
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2023-04-01 01:54:55
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2023-03-29 02:07:45
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2023-03-28 12:19:58
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2022-10-11 12:58:08
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2022-10-11 01:19:34
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2022-04-26 01:50:31
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2022-04-08 17:23:10
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2022-03-01 21:23:27
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2022-03-01 00:22:55
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2021-05-04 13:52:40
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2021-04-22 03:02:10
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2020-12-10 01:31:43
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2020-12-10 01:29:43
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2020-12-10 00:22:55
  • Multiple Updates
2020-12-09 17:22:54
  • Multiple Updates
2020-12-09 09:23:08
  • First insertion